MATLAB Answers

Not enough input arguments.

조회 수: 6(최근 30일)
Air Roland Dela Cruz
Air Roland Dela Cruz 2021년 5월 9일
편집: per isakson 2021년 5월 9일
Why do I get an error when create the M-File "Lorenz" with the following input:
function xprime = Lorenz(t,x);
%LORENZ: Computes the derivatives involved in solving the Lorenz equations
sig = 10;
beta = 8/3;
rho=28;
xprime=[-sig*x(1) + sig*x(2);rho*x(1)-x(2)-x(1)*x(3);-beta*x(3) +x(1)*x(2)];
The error says:
Error in Lorenz (line 6)
xprime=[-sig*x(1) + sig*x(2);rho*x(1)-x(2)-x(1)*x(3);-beta*x(3) +x(1)*x(2)];
  댓글 수: 1
per isakson
per isakson 2021년 5월 9일
I get the error (R2018b)
Error using vertcat
Dimensions of arrays being concatenated are not consistent.
Error in Untitled2>Lorenz (line 11)
xprime=[-sig*x(1) + sig*x(2); rho*x(1)-x(2)-x(1)*x(3); -beta*x(3) +x(1)*x(2)];
Error in Untitled2 (line 4)
xprime = Lorenz( t, x );
I cannot see that this statement (Lorenz (line 6)) could throw the error "Not enough input arguments."
Show your full error message.

댓글을 달려면 로그인하십시오.

채택된 답변

per isakson
per isakson 2021년 5월 9일
편집: per isakson 2021년 5월 9일
You need to call the function, Lorenz, with two input arguments: t and x. E.g.
%%
x = (1:6);
t = nan;
xprime = Lorenz( t, x )
In your case the variable, x, is not defined in the workspace of Lorenz. Thus, the expression cannot be evaluated. Don't ask me why the error message isn't more informative.

추가 답변(0개)

제품

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by